Unit Converters

Ounces to Kilograms (Mass) Converter

Convert mass between avoirdupois ounces and kilograms. The factor is exactly 0.028349523125 kg per ounce, set by the 1959 treaty.

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Converted weight
0.4536 kg

16 ounces → kilograms

Conversion factor
×0.0283495
1 oz equals
0.0283 kg
Conversion factors are exact; rounding may affect the final digit.
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How it's calculated

kg = oz × 0.0283495

oz = avoirdupois ounces, kg = kilograms. 1 oz = 0.028349523 kg; reverse with oz = kg ÷ 0.0283495 (≈ kg × 35.274).

Common values

OuncesKilograms
1 oz0.0283 kg
8 oz0.2268 kg
16 oz0.4536 kg
32 oz0.9072 kg

Common questions

How many ounces are in a kilogram?

About 35.27 avoirdupois ounces make a kilogram.

Is this the avoirdupois ounce?

Yes, the everyday ounce. The troy ounce used for precious metals is heavier.